McMillan
- Clan MacMillan
- Division of McMillan
- Flagstaff, Arizona
- MacMillan (crater)
- MacMillan Bloedel
- MacMillan Provincial Park
- Macmillan Academy
- Macmillan Cancer Support
- Macmillan Inc.
- Macmillan Publishers
- Macmillan River
- Macmillan of Canada
- McMillan (agency)
- McMillan (community), Wisconsin
- McMillan (surname)
- McMillan Firearms Manufacturing
- McMillan Hotels
- McMillan LLP
- McMillan Plan
- McMillan Reservoir
- McMillan TAC-50
- McMillan Township, Luce County, Michigan
- McMillan Township, Ontonagon County, Michigan
- McMillan, Michigan
- McMillan, Oklahoma
- McMillan, Texas
- McMillan, Wisconsin
- Palgrave Macmillan